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The author is in a unique position to appreciate the technical difficulties of the time, as he led a team that built a working model of a Difference Engine, using contemporary materials, in time for Babbage's 1991 bicentenary. The meat of the book is comprised of the story of the first computing machine design as gathered from the technical notes and drawings curated by Swade. Though Babbage certainly had problems translating his ideas into brass, the reader also comes to understand his fruitless, drawn-out arguments with his funders. Swade had it comparatively easy, though his depictions of the frustrating search for money and then working out how best to build the enormous machine in the late 1980s are delightful.
It is difficult--maybe impossible--to draw a clear, unbroken line of influence from Babbage to any modern computer researchers, but his importance both as the first pioneer and as a symbol of the joys and sorrows of computing is unquestioned. Swade clearly respects his subject deeply, all the more so for having tried to bring the great old man's ideas to life. The Difference Engine is lovingly comprehensive and will thrill readers looking for a more technical examination of Babbage's career. --Rob Lightner --This text refers to an out of print or unavailable edition of this title.
Copyright 2001 Cahners Business Information, Inc.
--This text refers to an out of print or unavailable edition of this title.
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The most amazing part of the book is the overview of Babbage's design for the Analytical Engine- the first programmable computer. It is amazingly similar in concept to today's modern computers, but it uses motion through metal gears and cams, instead of electricity through logic gates and wires. I expected to be bored by the modern-day story, but I actually was interested in the process of reconstructing this 19th century machine. It was enlightening to see how the same problems Babbage faced 150 years before troubled engineers today.
Overall, I recommend this book for those curious about Babbage and his engines. However, the writing seems jerky and unorganized in parts, and there is little technical description of the engines' functionality.
Babbage wrote papers on chess, taxation, lock-picking, philosophy, submarines, archeology, cryptanalysis, and many other diverse efforts. He was an unstoppable inventor and tinkerer; he invented (but didn't get credit for) the ophthalmoscope every doctor has used, and the cowcatcher installed on the front of locomotives. But what he loved most of all were his computing machines. The Industrial Revolution was making everything else by steam; why not calculations, and perfect tables of them? He designed just such a calculating engine, and although because of various problems it didn't get built, he never stopped tinkering with it, and he designed an even bigger calculation machine that would have done, in its cogwheel way, all the basics that computers now do.
Babbage is sometimes called the grandfather of the computer, but he is more like an uncle. There is no evidence that any of his intricate and visionary machines influenced the design of electronic computers. Swade's engrossing book gives a good capsule biography of a fascinating man, but more importantly, it shows a hands-on appreciation for the machines he had dreamed up. Babbage knew that his dreams were doomed for his own time, but he had an inkling of what was to come; he wrote of the inventor's lot, "The certainty that a future age will repair the injustice of the present, and the knowledge that the more distant the day of reparation, the more he has outstripped the efforts of his contemporaries, may well sustain him against the sneers of the ignorant, or the jealousy of rivals." He was right again.
The first 210 pages provide the best description of Babbage's life yet. All the bits and pieces I've read in numbers of other books on Babbage are here, as told by a modern expert who puts it all in perspective. That perspective is essential, as Babbage's life was filled with controversy and conflict.
The last 100 pages of the book tell the story of building one of Babbage's planned-but-never-built calculating engines in the museum where the author works. It is this personal experience with building a working machine from the 150 year old plans that adds the magic "hands on" touch to the author's analysis of Babbage's tale.
This is a highly readable and fascinating book and undoubtedly the best single volume on the legacy of Charles Babbage.